CN110838274A - Detection system and detection method for eDP interface display panel - Google Patents
Detection system and detection method for eDP interface display panel Download PDFInfo
- Publication number
- CN110838274A CN110838274A CN201911168241.6A CN201911168241A CN110838274A CN 110838274 A CN110838274 A CN 110838274A CN 201911168241 A CN201911168241 A CN 201911168241A CN 110838274 A CN110838274 A CN 110838274A
- Authority
- CN
- China
- Prior art keywords
- module
- display panel
- display
- power
- tested
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to the technical field of drive detection of an eDP interface display panel product, in particular to a detection system and a detection method of an eDP interface display panel. The detection system of the eDP interface display panel provided by the invention is matched with the guidance of a corresponding test method, and has the following beneficial effects: the test function to be realized is independently researched and developed and is independently designed, so that the test device is easy to maintain and the manufacturing cost is reduced; the general use of the lighting test mainboard of the notebook display panel is realized, and the production period of the test fixture is shortened; the SD card picture system can meet the requirements of a user on lighting test pictures and other specific pictures of the notebook display panel in time so as to meet the highest test standard; the 2K and 4K eDP interface notebook display panel which is popular in the test market is compatible, and the problem of power supply short circuit risk existing in the test of the notebook panel is avoided.
Description
Technical Field
The invention relates to the technical field of drive detection of an eDP interface display panel product, in particular to a detection system and a detection method of an eDP interface display panel.
Background
With the rapid development of the notebook computer industry at home and abroad, the intellectualization of the notebook computer is an indispensable part in a touch and display panel system. With the development of 4K (16: 94K screen resolution 3840 × 2160) panels, a lot of notebook computers with 4K screen as selling point have appeared on the market, wherein the eDP interface panel is rapidly becoming the mainstream interface. At present, according to the characteristics of the display panel, a corresponding driving system can be purchased in the market, and is integrated on a closed box, and the driving system is connected with a power supply and a connecting wire corresponding to the display panel, so that the key operation can be carried out, and the panel can display pictures for testing. Since it is purchased according to the characteristics of the item display panel and it is subjected to the sealing process, there are disadvantages as follows:
1. the compatibility is low, and a plurality of types of display panels cannot be driven to be lightened;
2. the purchase time is long, and the timely processing cannot be realized when specific requirements exist;
3. the system is not easy to maintain, and cannot be maintained in time when a fault occurs;
4. the cost is too high to be beneficial to cost control.
Disclosure of Invention
The invention provides a detection system and a detection method of an eDP interface display panel, and solves the technical problems that the existing method for detecting by purchasing a closed processing driving system causes low system compatibility and can not drive and light a plurality of types of display panels; the purchase time is long, and the processing cannot be carried out in time when specific requirements exist; the system is not easy to maintain, and cannot be maintained in time when a fault occurs; and the cost is too high to be beneficial to cost control.
In order to solve the technical problems, the invention provides a detection system of an eDP interface display panel, which comprises a power panel module, a drive panel module and an enhanced panel module which are sequentially connected, wherein the enhanced panel module is used for connecting a display panel to be tested;
the power panel module is used for accessing and adjusting an external direct-current power supply to supply power to the drive board module, the reinforcing board module and the display panel to be tested connected with the reinforcing board module;
the driving board module is used for providing an original eDP signal for the display panel to be tested, acquiring state information of the display panel to be tested and sending the state information to the power board module for diagnosis and display;
and the reinforcing plate module is used for amplifying the original eDP signal and outputting the amplified eDP signal to the display panel to be tested to display a preset picture.
Furthermore, the power panel module comprises a power module, an overvoltage and overcurrent protection module, a first communication module and a microcontroller which are sequentially connected, and also comprises a key and display module, an indicator lamp and buzzer alarm module, a voltage detection and current detection module and a power conduction control module which are independently connected with the microcontroller, and also comprises an anti-short circuit protection module connected between the power conduction control module and the drive board module, wherein the voltage detection and current detection module is also connected with the power conduction control module, the first communication module is also connected with the drive board module, and the anti-short circuit protection module is also connected with the microcontroller;
the external direct current power supply is connected from the power supply module, subjected to voltage conversion and voltage stabilization regulation, sequentially subjected to power supply protection of the overvoltage and overcurrent protection module, transmitted by the first communication module to each rear functional module and supplied with power by the microcontroller, and further subjected to transmission of the microcontroller, conduction control of the microcontroller on the power supply conduction control module, and short-circuit prevention protection of the short-circuit prevention protection module to the drive board module;
the first communication module is also used for transmitting a signal sent by the drive board module to the microcontroller, so that the microcontroller controls a corresponding power supply to supply power according to a specific time sequence and starts related detection; the microcontroller is also used for sending the state information of the display panel to be tested, which is transmitted by the driving board module, to the microcontroller;
the key module in the key and display module is used for providing man-machine interaction and indicating the lighting of the display panel to be detected and the switching of display pictures; the display module in the key and display module is used for displaying system working state related information including the state information of the display panel to be tested under the indication of the key module;
the indicator light module in the indicator light and buzzer alarm module is used for indicating the power-up and power-down state when an external direct current power supply supplies power; the buzzer module in the indicator light and buzzer alarm module is used for giving an alarm prompt when the microcontroller receives an abnormal signal;
the voltage and current detection module is used for converting a power supply signal detected by the voltage and current detection module into a voltage signal suitable for detection, so that the microcontroller can accurately acquire the power supply voltage and current output to the drive board module.
Further, the driving board module comprises an FPGA core processing module, and a second communication module, an SD card picture system and a display driving module which are connected with the FPGA core processing module;
the second communication module is connected with the power panel module and is used for further transmitting the signals transmitted by the power panel module to the FPGA core processing module and determining whether to output display signals or not; the FPGA core processing module is also used for transmitting the state information of the display panel to be tested, which is detected by the FPGA core processing module, to the power panel module for processing and judging whether the state information of the display panel to be tested is normal or not;
the FPGA core processing module is used for outputting an RGB signal corresponding to a basic test picture stored by the FPGA core processing module or a customized test picture in the SD card picture system to the display driving module when determining to output a display signal;
the display driving module is used for converting the RGB signals into the eDP signals and sending the eDP signals to the reinforcing plate module.
Preferably, the microcontroller adopts STM32 enhanced series chips, the pin number is not less than 100, and the FLASH memory is not less than 512K.
Preferably, the microcontroller employs STM32F103VET 6; the display module adopts a 12864 display screen; the voltage-current detection module adopts an LM324 voltage follower and an INA282/INA286 series of current detection ICs.
Preferably, the basic test picture comprises Pattern pictures such as pure color, gray scale, color bar, Crosstalk, checkerboard and the like; the display driving module adopts a bridge IC DP 501.
Further, the external direct current power supply is 24V.
The invention also provides a detection method of the eDP interface display panel, which comprises the following steps:
s1, accessing a display panel to be tested, accessing an external direct-current power supply, turning on a power switch, and powering on a detection system;
s2, checking system version information displayed on a display screen, and pressing a key to confirm after the system version information is determined to be matched with the display panel to be tested;
s3, pressing the key again, lighting the display panel to be tested for picture display, and monitoring the current voltage of the display panel to be tested to be displayed on the display screen;
s4, switching the display panel to be tested to sequentially display a pre-stored basic test picture and a customized test picture by sequentially pressing the keys;
and S5, judging whether the picture displayed by the display panel to be tested is consistent with the pre-stored basic test picture and the pre-stored customized test picture and normally displaying, if so, detecting to be passed, otherwise, detecting to be failed.
Further, in step S4, when the current and voltage of the display panel to be tested are monitored to be abnormal, an alarm is issued, and the detection system is automatically powered off.
Further, in the step S5, the basic test picture includes a Pattern picture such as a solid color, a gray scale, a color bar, a Crosstalk, a checkerboard, and the like.
The detection system of the eDP interface display panel provided by the invention is matched with the guidance of a corresponding test method, and has the following beneficial effects that:
1. the test function to be realized is independently researched and developed and is independently designed, so that the test device is easy to maintain and the manufacturing cost is reduced;
2. the general use of the lighting test mainboard of the notebook display panel is realized, and the production period of the test fixture is shortened;
3. the SD card picture system can meet the requirements of a user on lighting test pictures and other specific pictures of the notebook display panel in time so as to meet the highest test standard;
4. the 2K and 4K eDP interface notebook display panel which is popular in the test market is compatible, and the problem of power supply short circuit risk existing in the test of the notebook panel is avoided.
Drawings
Fig. 1 is a block diagram of a detection system of an eDP interface display panel according to an embodiment of the present invention;
fig. 2 is a structural diagram of the power board module 1 in fig. 1 according to an embodiment of the invention;
FIG. 3 is a block diagram of the driver board module 2 of FIG. 1 provided in accordance with an embodiment of the present invention;
fig. 4 is a flowchart illustrating steps of a method for detecting an eDP interface display panel according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are given for illustrative purposes only and are not to be construed as limiting the invention, and the embodiments and the dimensions of the components and the drawings are merely preferred embodiments, which are provided for reference and illustrative purposes only and do not limit the scope of the invention, since many changes may be made therein without departing from the spirit and scope thereof.
As shown in fig. 1, the detection system of an eDP interface display panel provided in an embodiment of the present invention is mainly divided into three modules, including a power board module 1, a driving board module 2, and an enhanced board module 3 (and some auxiliary accessories connected to the three modules) which are connected in sequence, where the enhanced board module 3 is used to connect a display panel to be tested (in this embodiment, also referred to as a display panel for short);
the power panel module 1 is used for accessing and adjusting an external direct current power supply (24V) to supply power to the driving panel module 2, the reinforcing panel module 3 and the display panel to be tested connected with the reinforcing panel module 3;
the driving board module 2 is used for providing an original eDP signal for the display panel to be tested, acquiring state information of the display panel to be tested, and sending the state information to the power board module 1 for diagnosis and display;
and the reinforcing plate module 3 is configured to amplify the original eDP signal and output the amplified eDP signal to the display panel to be tested to display a preset picture.
Further, as shown in fig. 2, the power board module 1 includes a power module 11, an overvoltage and overcurrent protection module 12, a first communication module 13, a microcontroller 14, a key and display module 15, an indicator light and buzzer alarm module 16, a voltage detection and current detection module 17, a power conduction control module 18, and an anti-short circuit protection module 19 connected between the power conduction control module 18 and the driver board module 2, where the voltage detection and current detection module 17 is further connected to the power conduction control module 18, the first communication module 13 is further connected to the driver board module 2, and the anti-short circuit protection module 19 is further connected to the microcontroller 14;
the external direct current power supply is accessed from the power supply module 11, and after voltage conversion and voltage stabilization regulation, the external direct current power supply sequentially passes through power supply protection of the overvoltage and overcurrent protection module 12 (preventing voltage and current from being too large and burning products), the transmission of the first communication module 13 reaches each function module arranged at the rear and the microcontroller 14 to supply power to the external direct current power supply, and further reaches the drive board module 2 through the transmission of the microcontroller 14, the conduction control of the microcontroller 14 on the power supply conduction control module 18, and the short-circuit prevention protection of the short-circuit prevention protection module 19 (detecting whether the power supply of the display panel and the ground are short-circuited or not, and avoiding power-on screen burning);
the first communication module 13 is further configured to transmit a signal sent by the driver board module 2 to the microcontroller 14, so that the microcontroller 14 controls a corresponding power supply to supply power according to a specific time sequence and starts related detection; the microcontroller 14 is also used for sending the display panel state information to be tested transmitted by the driving board module 2 to the microcontroller;
the key module in the key and display module 15 is used for providing human-computer interaction and indicating the lighting of the display panel to be detected and the switching of display pictures; the display module in the key and display module 15 is configured to display system operating state related information including the state information of the display panel to be tested under the indication of the key module;
the indicator light module in the indicator light and buzzer alarm module 16 is used for indicating the power-up and power-down state when the external direct current power supply supplies power; the buzzer module in the indicator light and buzzer alarm module 16 is used for giving an alarm when the microcontroller 14 receives an abnormal signal;
the voltage and current detecting module 17 is used for converting a power supply signal detected by the microcontroller into a voltage signal suitable for detection, so that the microcontroller 14 can accurately acquire the power supply voltage and current output to the drive board module 2;
the above "the microcontroller 14 controls the conduction of the power conduction control module 18" specifically means that the microcontroller 14 controls whether the MOS switch of the power conduction control module 18 is conducted or not, so as to effectively and quickly conduct or isolate the power supply, meet the power supply timing sequence of the display panel, prevent electric leakage, and protect the product.
In this embodiment, the microcontroller 14 preferably uses an STM32 enhanced serial chip, the pin count is not less than 100, and the FLASH memory is not less than 512K. More preferably, the microcontroller 14 preferably employs an STM32F103VET6, having a 100 pin, 512K Flash, 64kSRAM, LQFP package, 32 bit Cortex core.
The display module preferably adopts a 12864 display screen; the voltage-current-detecting module 17 adopts an LM324 voltage follower and an INA282/INA286 series of current-detecting ICs adopts an INA282/INA286 series of current-detecting ICs.
As shown in fig. 3, in this embodiment, the driver board module 2 includes an FPGA core processing module 21, and a second communication module 22, an SD card image system 23, and a display driver module 24 connected to the FPGA core processing module 21;
the second communication module 22 is connected to the power strip module 1, and is configured to further transmit the signal transmitted by the power strip module 1 to the FPGA core processing module 21, and determine whether to output a display signal; the FPGA core processing module 21 is further configured to transmit the state information of the display panel to be tested, detected by the FPGA core processing module, to the power strip module 1 for processing, and determine whether the state information of the display panel to be tested is normal;
the FPGA core processing module 21 is configured to output, when determining to output a display signal, an RGB signal corresponding to a basic test picture stored in the FPGA core processing module or a customized test picture in the SD card picture system 23 to the display driving module 24;
the display driving module 24 is configured to convert the RGB signals into the eDP signals and send the eDP signals to the enhanced board module 3.
Preferably, the basic test picture comprises Pattern pictures such as pure color, gray scale, color bar, Crosstalk, checkerboard and the like; the display driving module 24 employs a bridge IC DP 501.
An embodiment of the present invention further provides a method for detecting an eDP interface display panel, which is applied to the detection system for an eDP interface display panel, and as shown in fig. 4, the method specifically includes the following steps:
s1, accessing a display panel to be tested, accessing an external direct-current power supply, turning on a power switch, and powering on a detection system;
s2, checking system version information displayed on a display screen, and pressing a key to confirm after the system version information is determined to be matched with the display panel to be tested;
s3, pressing the key again, lighting the display panel to be tested for picture display, and monitoring the current voltage of the display panel to be tested to be displayed on the display screen;
s4, switching the display panel to be tested to sequentially display a pre-stored basic test picture and a customized test picture by sequentially pressing the keys;
and S5, judging whether the picture displayed by the display panel to be tested is consistent with the pre-stored basic test picture and the pre-stored customized test picture and normally displaying, if so, detecting to be passed, otherwise, detecting to be failed.
Further, in step S4, when the current and voltage of the display panel to be tested are monitored to be abnormal, an alarm is issued, and the detection system is automatically powered off.
Further, in the step S5, the basic test picture includes a Pattern picture such as a solid color, a gray scale, a color bar, a Crosstalk, a checkerboard, and the like.
The detection system of the eDP interface display panel provided by the embodiment of the invention is matched with the guidance of a corresponding test method, and has the following beneficial effects:
1. the test function to be realized is independently researched and developed and is independently designed, so that the test device is easy to maintain and the manufacturing cost is reduced;
2. the general use of the lighting test mainboard of the notebook display panel is realized, and the production period of the test fixture is shortened;
3. the SD card picture system 23 can meet the requirements of a lighting test picture and other specific pictures of the notebook display panel required by a client in time so as to meet the highest test standard;
4. the 2K and 4K eDP interface notebook display panel which is popular in the test market is compatible, and the problem of power supply short circuit risk existing in the test of the notebook panel is avoided.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The detection system of the eDP interface display panel is characterized by comprising a power panel module, a driving panel module and an enhanced panel module which are sequentially connected, wherein the enhanced panel module is used for connecting a display panel to be tested;
the power panel module is used for accessing and adjusting an external direct-current power supply to supply power to the drive board module, the reinforcing board module and the display panel to be tested connected with the reinforcing board module;
the driving board module is used for providing an original eDP signal for the display panel to be tested, acquiring state information of the display panel to be tested and sending the state information to the power board module for diagnosis and display;
and the reinforcing plate module is used for amplifying the original eDP signal and outputting the amplified eDP signal to the display panel to be tested to display a preset picture.
2. The detecting system of claim 1, wherein: the power panel module comprises a power module, an overvoltage and overcurrent protection module, a first communication module and a microcontroller which are sequentially connected, and further comprises a key and display module, an indicator lamp and buzzer alarm module, a voltage detection and current detection module and a power conduction control module which are independently connected with the microcontroller, and further comprises an anti-short circuit protection module connected between the power conduction control module and the drive board module, wherein the voltage detection and current detection module is also connected with the power conduction control module, the first communication module is also connected with the drive board module, and the anti-short circuit protection module is also connected with the microcontroller;
the external direct current power supply is connected from the power supply module, subjected to voltage conversion and voltage stabilization regulation, sequentially subjected to power supply protection of the overvoltage and overcurrent protection module, transmitted by the first communication module to each rear functional module and supplied with power by the microcontroller, and further subjected to transmission of the microcontroller, conduction control of the microcontroller on the power supply conduction control module, and short-circuit prevention protection of the short-circuit prevention protection module to the drive board module;
the first communication module is also used for transmitting a signal sent by the drive board module to the microcontroller, so that the microcontroller controls a corresponding power supply to supply power according to a specific time sequence and starts related detection; the microcontroller is also used for sending the state information of the display panel to be tested, which is transmitted by the driving board module, to the microcontroller;
the key module in the key and display module is used for providing man-machine interaction and indicating the lighting of the display panel to be detected and the switching of display pictures; the display module in the key and display module is used for displaying system working state related information including the state information of the display panel to be tested under the indication of the key module;
the indicator light module in the indicator light and buzzer alarm module is used for indicating the power-up and power-down state when an external direct current power supply supplies power; the buzzer module in the indicator light and buzzer alarm module is used for giving an alarm prompt when the microcontroller receives an abnormal signal;
the voltage and current detection module is used for converting a power supply signal detected by the voltage and current detection module into a voltage signal suitable for detection, so that the microcontroller can accurately acquire the power supply voltage and current output to the drive board module.
3. The detecting system of claim 1, wherein: the driving board module comprises an FPGA core processing module, a second communication module connected with the FPGA core processing module, an SD card picture system and a display driving module;
the second communication module is connected with the power panel module and is used for further transmitting the signals transmitted by the power panel module to the FPGA core processing module and determining whether to output display signals or not; the FPGA core processing module is also used for transmitting the state information of the display panel to be tested, which is detected by the FPGA core processing module, to the power panel module for processing and judging whether the state information of the display panel to be tested is normal or not;
the FPGA core processing module is used for outputting an RGB signal corresponding to a basic test picture stored by the FPGA core processing module or a customized test picture in the SD card picture system to the display driving module when determining to output a display signal;
the display driving module is used for converting the RGB signals into the eDP signals and sending the eDP signals to the reinforcing plate module.
4. The detecting system of claim 2, wherein: the microcontroller adopts STM32 enhanced chips, the pin number is not less than 100, and the FLASH memory is not less than 512K.
5. The detecting system of claim 4, wherein: the microcontroller adopts STM32F103VET 6; the display module adopts a 12864 display screen; the voltage-current detection module adopts an LM324 voltage follower and an INA282/INA286 series of current detection ICs.
6. The detecting system of claim 3, wherein: the basic test pictures comprise Pattern pictures such as pure colors, gray scales, color bars, Crosstalk, checkerboards and the like; the display driving module adopts a bridge IC DP 501.
7. The detecting system of claim 1, wherein: the external direct current power supply is 24V.
8. A detection method for an eDP interface display panel is characterized by comprising the following steps:
s1, accessing a display panel to be tested, accessing an external direct-current power supply, turning on a power switch, and powering on a detection system;
s2, checking system version information displayed on a display screen, and pressing a key to confirm after the system version information is determined to be matched with the display panel to be tested;
s3, pressing the key again, lighting the display panel to be tested for picture display, and monitoring the current voltage of the display panel to be tested to be displayed on the display screen;
s4, switching the display panel to be tested to sequentially display a pre-stored basic test picture and a customized test picture by sequentially pressing the keys;
and S5, judging whether the picture displayed by the display panel to be tested is consistent with the pre-stored basic test picture and the pre-stored customized test picture and normally displaying, if so, detecting to be passed, otherwise, detecting to be failed.
9. The method as claimed in claim 8, wherein the method further comprises: in the step S4, when the current and voltage of the display panel to be tested are monitored to be abnormal, an alarm is sent out, and the detection system is automatically powered off.
10. The method as claimed in claim 9, wherein the method further comprises: in step S5, the basic test picture includes a Pattern picture such as a solid color, a gray scale, a color bar, a Crosstalk, a checkerboard, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168241.6A CN110838274A (en) | 2019-11-25 | 2019-11-25 | Detection system and detection method for eDP interface display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911168241.6A CN110838274A (en) | 2019-11-25 | 2019-11-25 | Detection system and detection method for eDP interface display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110838274A true CN110838274A (en) | 2020-02-25 |
Family
ID=69577511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911168241.6A Pending CN110838274A (en) | 2019-11-25 | 2019-11-25 | Detection system and detection method for eDP interface display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110838274A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112764805A (en) * | 2021-02-02 | 2021-05-07 | 广州视源电子科技股份有限公司 | Software version information acquisition method of screen drive board and related equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020021294A1 (en) * | 2000-08-11 | 2002-02-21 | Jun Il Jin | Apparatus for self-diagnosing a video signal in an LCD panel and a method thereof |
| CN102789073A (en) * | 2012-03-08 | 2012-11-21 | 无锡博一光电科技有限公司 | Testing method for MIPI liquid crystal screen |
| US20120320020A1 (en) * | 2011-06-14 | 2012-12-20 | Hiroaki Chiba | Electronic apparatus, display panel control device and display panel control method |
| CN205122151U (en) * | 2015-04-24 | 2016-03-30 | 苏州工业园区海的机电科技有限公司 | Novel test of multi -functional LCD module device |
| CN105761654A (en) * | 2016-05-17 | 2016-07-13 | 深圳前海骁客影像科技设计有限公司 | Flexible easy-to-expand liquid crystal screen testing platform |
| CN206906478U (en) * | 2017-04-28 | 2018-01-19 | 昆山龙腾光电有限公司 | A kind of liquid crystal display die set measurement of power loss device |
| CN108364593A (en) * | 2018-01-17 | 2018-08-03 | 精电(河源)显示技术有限公司 | A kind of test system suitable for TFT liquid crystal displays |
| CN110109274A (en) * | 2019-06-11 | 2019-08-09 | 江苏毅昌科技有限公司 | A kind of the picture detection device and method of liquid crystal display |
| CN110300299A (en) * | 2019-06-27 | 2019-10-01 | 深圳创维－Rgb电子有限公司 | Show facility switching machine method for testing pressure, device, equipment and storage medium |
-
2019
- 2019-11-25 CN CN201911168241.6A patent/CN110838274A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020021294A1 (en) * | 2000-08-11 | 2002-02-21 | Jun Il Jin | Apparatus for self-diagnosing a video signal in an LCD panel and a method thereof |
| US20120320020A1 (en) * | 2011-06-14 | 2012-12-20 | Hiroaki Chiba | Electronic apparatus, display panel control device and display panel control method |
| CN102789073A (en) * | 2012-03-08 | 2012-11-21 | 无锡博一光电科技有限公司 | Testing method for MIPI liquid crystal screen |
| CN205122151U (en) * | 2015-04-24 | 2016-03-30 | 苏州工业园区海的机电科技有限公司 | Novel test of multi -functional LCD module device |
| CN105761654A (en) * | 2016-05-17 | 2016-07-13 | 深圳前海骁客影像科技设计有限公司 | Flexible easy-to-expand liquid crystal screen testing platform |
| CN206906478U (en) * | 2017-04-28 | 2018-01-19 | 昆山龙腾光电有限公司 | A kind of liquid crystal display die set measurement of power loss device |
| CN108364593A (en) * | 2018-01-17 | 2018-08-03 | 精电(河源)显示技术有限公司 | A kind of test system suitable for TFT liquid crystal displays |
| CN110109274A (en) * | 2019-06-11 | 2019-08-09 | 江苏毅昌科技有限公司 | A kind of the picture detection device and method of liquid crystal display |
| CN110300299A (en) * | 2019-06-27 | 2019-10-01 | 深圳创维－Rgb电子有限公司 | Show facility switching machine method for testing pressure, device, equipment and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 雷博琳等: "浅谈低功耗液晶显示屏的设计技术", 《现代显示》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112764805A (en) * | 2021-02-02 | 2021-05-07 | 广州视源电子科技股份有限公司 | Software version information acquisition method of screen drive board and related equipment |
| CN112764805B (en) * | 2021-02-02 | 2024-05-14 | 广州视源电子科技股份有限公司 | Method for acquiring software version information of screen driving board and related equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20100306592A1 (en) | Computer system on and off test apparatus and method | |
| TWI435093B (en) | Detection circuit of display panel | |
| CN110261759B (en) | Chip pin damage detection system | |
| US8081730B2 (en) | Monitoring device for connectors | |
| CN110532207A (en) | Bus system and its detection method | |
| CN110838274A (en) | Detection system and detection method for eDP interface display panel | |
| CN109783282A (en) | Computer installation and abnormity of power supply detection method | |
| CN101122620A (en) | Power supply line | |
| TWM420703U (en) | Power on self test card for mainboard | |
| CN114325149A (en) | Special robot electrical fault diagnosis system | |
| US8179138B2 (en) | CRT test system | |
| CN101835313B (en) | LED control device with current monitoring function | |
| CN111243488B (en) | Display device and power protection method thereof | |
| KR20060012715A (en) | Host apparatus sensing the strange signal of external device connected by communication cable and method thereof | |
| CN1484146A (en) | Test card for computer | |
| CN202050507U (en) | Video display testing system | |
| CN111026592A (en) | Computer hardware detection device | |
| CN101464473B (en) | Electric voltage exception protection device used for circuit board test | |
| CN215932724U (en) | Display screen self-checking system and unmanned selling device | |
| CN100407511C (en) | Method for preventing veneer misplug and its realizing apparatus | |
| US8510477B2 (en) | Protocol resolution device and method employing the same | |
| CN111464809B (en) | Data stability testing circuit and testing method for image acquisition card | |
| CN101738534B (en) | Voltage test device and voltage test method | |
| CN102509532A (en) | Detection circuit, driving chip, display module and detection method of transmission interface | |
| CN201369042Y (en) | Test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200225 |